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Finding the Fourth Proportional to 18,655.13, 27,965.10 and 9,286.29

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Solution

The fourth proportional to 18,655.13, 27,965.10 and 9,286.29 is: 13,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.13 : 27,965.10 = 9,286.29 : x
  2. Step 2: Convert to fraction form
    18,655.13/27,965.10 = 9,286.29/x
  3. Step 3: Cross multiply
    18,655.13x = 27,965.10 × 9,286.29
  4. Step 4: Simplify right side
    18,655.13x = 259,692,063.30
  5. Step 5: Solve for x
    x = 259,692,063.30/18,655.13
  6. Step 6: Final answer
    x = 13,920.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.